Regulation of Temperature-Responsive Flowering by MADS-Box Transcription Factor Repressors

被引：318

作者：

Lee, Jeong Hwan ^{[1
]}

Ryu, Hak-Seung ^{[1
]}

Chung, Kyung Sook ^{[1
]}

Pose, David ^{[2
]}

Kim, Soonkap ^{[1
]}

Schmid, Markus ^{[2
]}

Ahn, Ji Hoon ^{[1
]}

机构：

[1] Korea Univ, Dept Life Sci, Creat Res Initiat, Seoul 136701, South Korea

[2] Max Planck Inst Dev Biol, Dept Mol Biol, D-72076 Tubingen, Germany

来源：

SCIENCE | 2013年 / 342卷 / 6158期

基金：

新加坡国家研究基金会;

关键词：

AMBIENT-TEMPERATURE; PHENOTYPIC PLASTICITY; ARABIDOPSIS-THALIANA; CLIMATE-CHANGE; TIME; PLANTS; VERNALIZATION; PROTEIN; SVP; ENCODES;

D O I：

10.1126/science.1241097

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Changes in ambient temperature affect flowering time in plants; understanding this phenomenon will be crucial for buffering agricultural systems from the effects of climate change. Here, we show that levels of FLM-beta, an alternatively spliced form of the flowering repressor FLOWERING LOCUS M, increase at lower temperatures, repressing flowering. FLM-beta interacts with SHORT VEGETATIVE PHASE (SVP); SVP is degraded at high temperatures, reducing the abundance of the SVP-FLM-beta repressor complex and, thus, allowing the plant to flower. The svp and flm mutants show temperature-insensitive flowering in different temperature ranges. Control of SVP-FLM-beta repressor complex abundance via transcriptional and splicing regulation of FLM and posttranslational regulation of SVP protein stability provides an efficient, rapid mechanism for plants to respond to ambient temperature changes.

引用

页码：628 / 632

页数：5

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